<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <!-- this.$store.state.city -->
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" 
              v-for="item of hot" 
              :key="item.id"
              @click="handleCityClick(item.name)"
          >
              <div class="button">{{item.name}}</div>
           </div>
        </div>
      </div>
      <div 
        class="area" 
        v-for="(item, key) of cities" 
        :key="key"
        :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
           <div class="item border-bottom" 
                v-for="innerItem of item" 
                :key="innerItem.id"
                @click="handleCityClick(innerItem.name)"
           >
             {{innerItem.name}}
           </div>
        </div>
      </div>
    </div>
  </div>
  
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
		name: 'CityList',
    props: {
      hot: Array,
      cities: Object,
      letter: String
    },
    computed: {
      ...mapState({
        currentCity: 'city'
      })
    },
    methods: {
      handleCityClick (city) {
        //this.$store.dispatch('changeCity',city)
        //this.$store.commit('changeCity', city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    watch: {
      letter () {
        if (this.letter) {
          const element = this.$refs[this.letter][0]
          this.scroll.scrollToElement(element)
        }
      }
    },
    mounted () {
      this.scroll = new Bscroll(this.$refs.wrapper)
    }
	}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.border-topbottom
  &:before
    border-color: #ccc
  &:after
    border-color: #ccc
.border-bottom
  &:before
    border-color: #ccc
.list
  overflow: hidden
  position: absolute
  top: 1.58rem
  left: 0
  right: 0
  bottom: 0
  .title
    line-height: .54rem
    background: #eee
    padding-left: .2rem
    color: #666
    font-size: .26rem
  .button-list
    overflow: hidden
    padding: .1rem .6rem .1rem .1rem
    .button-wrapper
      float: left
      width: 33.33%
      .button
        margin: .1rem
        text-align:center
        border: .02rem solid #ccc
        border-radius: .06rem
  .item-list
    .item
      line-height: .76rem
      padding-left: .2rem
</style>